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Thioplex Side Effects

Generic name: thiotepa

Medically reviewed by Last updated on Mar 30, 2023.

Note: This document contains side effect information about thiotepa. Some dosage forms listed on this page may not apply to the brand name Thioplex.

Applies to thiotepa: injection powder for solution.

Serious side effects of Thioplex

Along with its needed effects, thiotepa (the active ingredient contained in Thioplex) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor or nurse immediately if any of the following side effects occur while taking thiotepa:

More common

Incidence not known

Other side effects of Thioplex

Some side effects of thiotepa may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Incidence not known

For Healthcare Professionals

Applies to thiotepa: injectable powder for injection, intravenous powder for injection.


Very common (10% or more): Leukopenia, thrombocytopenia, febrile neutropenia, anemia, pancytopenia


Common (1% to 10%): Hemorrhage

Frequency not reported: Bone marrow depression, hematopoietic suppression,

thromboembolism, venous thromboembolism[Ref]


Common (1% to 10%): Myelodysplastic syndrome, acute nonlymphocytic



Common (1% to 10%): Allergic reaction (e.g., rash, urticaria, laryngeal edema, asthma, anaphylactic shock, wheezing)[Ref]


Very common (10% or more): Injection site edema, injection site inflammation, injection site pain

Frequency not reported: Contact dermatitis[Ref]


Very common (10% or more): Nausea, stomatitis, esophagitis, vomiting, diarrhea, abdominal pain, dyspepsia, enteritis, colitis, mucosal inflammation

Common (1% to 10%): Constipation, GI perforation, ileus

Uncommon (0.1% to 1%): GI ulcer

Frequency not reported: Oral mucositis[Ref]


Very common (10% or more): Hemorrhagic cystitis (after intravesical or IV administration)

Common (1% to 10%): Oliguria, renal failure, cystitis, hematuria, dysuria, blood creatinine increased, blood urea increased

Frequency not reported: Urinary retention[Ref]


Very common (10% or more): Idiopathic pneumonia syndrome, epistaxis

Common (1% to 10%): Pulmonary edema, cough, pneumonitis

Uncommon (0.1% to 1%): Hypoxia, pulmonary arterial hypertension

Frequency not reported: Apnea[Ref]

Nervous system

Very common (10% or more): Dizziness, headache, encephalopathy, convulsion, paresthesia

Common (1% to 10%): Intracranial aneurysm, extrapyramidal disorder, cognitive disorder, cerebral hemorrhage

Frequency not reported: Leukoencephalopathy[Ref]


Very common (10% or more): Rash, alopecia, pruritus

Common (1% to 10%): Erythema

Uncommon (0.1% to 1%): Pigmentation disorder, erythrodermic psoriasis

Frequency not reported: Severe toxic skin reactions (e.g., Stevens-Johnson syndrome, toxic epidermal necrolysis, contact dermatitis), skin discoloration (following topical use or exposure), local irritation (comparable to mild radiation cystitis following bladder instillation)[Ref]


Very common (10% or more): Amenorrhea, azoospermia, vaginal hemorrhage

Common (1% to 10%): Impairment of fertility in male, female infertility, menopausal symptoms

Frequency not reported: Interference with spermatogenesis[Ref]


Very common (10% or more): Vision blurred, conjunctivitis

Common (1% to 10%): Cataract[Ref]


Very common (10% or more): Hearing impaired, ototoxicity, tinnitus, pyrexia, asthenia, chills, multi-organ failure, pain

Frequency not reported: Fatigue, weakness, febrile reaction, discharge from a subcutaneous lesion may occur as the result of breakdown of tumor tissue[Ref]


Very common (10% or more): Increased susceptibility to infections, sepsis, acute graft versus host disease, chronic graft versus host disease

Uncommon (0.1% to 1%): Toxic shock syndrome[Ref]


Very common (10% or more): Back pain, myalgia, arthralgia[Ref]


Very common (10% or more): Anorexia, decreased appetite, hyperglycemia

Common (1% to 10%): Tumor lysis syndrome (occurring secondary to, spontaneous, or treatment related rapid destruction of malignant cells); features include hyperkalemia, hyperuricemia, and hyperphosphatemia with hypocalcemia (renal damage and arrhythmias can follow), weight increased, blood amylase increased[Ref]


Very common (10% or more): Confusion, mental status changes

Common (1% to 10%): Anxiety

Uncommon (0.1% to 1%): Delirium, nervousness, hallucination, agitation[Ref]


Very common (10% or more): Venoocclusive liver disease, hepatomegaly, jaundice, blood bilirubin increased, transaminases increased, gamma

Glutamyltransferase, increased blood alkaline, phosphatase increased, aspartate aminotransferase increased[Ref]


Very common (10% or more): Arrhythmia

Common (1% to 10%): Tachycardia, cardiac failure, lymphoedema, hypertension, embolism

Uncommon (0.1% to 1%): Cardiomyopathy, myocarditis[Ref]


Common (1% to 10%): Hypopituitarism[Ref]


1. Product Information. Thiotepa (thiotepa). Hikma USA (formerly West-Ward Pharmaceutical Corporation). 2001;PROD.

2. Cerner Multum, Inc. Australian Product Information.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.